Fluid-pressure-valve-lubricating mechanism.



PATENTED AUGi 15, 19055 T. R. BROWN. I FLUID PRESSURE VALVE LUBRIGATINGMECHANISM.

APPLIUATIOY FILED FEB. 29.1904.

UNITED STATES PATENT OFFICE.

FLUID-PRESSURE-VALVE-LUBRICATING MECHANISM.

Specification of Letters Patent.

Application filed February 29, 1904- Serial No. 195,704.

To all whom it may concern:

Be it known that I, THOMAS E. BROWN, a citizen of the United States,residing at I/Vemple, in the county of Albany and State of lew York,have invented certain new and useful Improvements inFluid-Pressure-Valve-Lubricating Mechanism, of which the following is aspecification.

My invention relates to a means for enabling a slid e-valve to beproperly lubricated in a valve mechanism which is operated underfluid-pressure without releasing the pressure from the valve mechanismor taking the casings of the mechanism apart.

I have shown my invention as applicable to the proper lubrication of therotary valve of an engineers brake-valve forming part of an air-brakesystem while the brake valve is charged with fluid under pressure; but Ido not limit my invention to a valve device in the air-brake art.

Referring to the drawings, Figure 1 is a vertical section through theupper cap or casing, the rotary valve and the valve-section of anengineers brake-valve similar to that illustrated in the United Statespatent to Corrington, No. 729,044, dated May 26, 1903. Fig. 2 is asimilar section of the same device, showing a modified construction.Fig. 3 is a top view or plan of the rotary valve, and Fig. 4 is a detailshowing a modification of Figs. 1 and 2.

In Fig. 1 the cap or upper section 1 is fastened in any convenientmanner to the valveseat section 3, with a gasket 14 interposed between.A passage 4 represents the means for. admitting fluid under pressure tothe casing 1 from a source of fluid-supply, such as an air pump orreservoir. The valve 5, having through it a port 2, rotates upon thevalveseat 6, which is part of the casing-section 3, and is heldconcentric with its seat by a pin 7 placed in a hole through the centerof the valve,which may be either winged or a looselyfitting rod, or itmay have a groove 8 in its side. Through the casing 1 a shaft 11extends, having on its lower end a disk 12, bearing upon a gasket 13 toprevent any leak about the shaft, and also having a tenon or key 9,fitting in usual manner a correspondinglyshaped slot or mortise on thetop of valve 5 between the lugs 10, Fig. 3. The shaft 11 has fastened inany convenient manner to its upper end a handle 15, by moving whichthrough a horizontal plane the shaft and the Valve 5 may be moved orrotated back and The operation is as follows: Fluid under pressure beingadmitted through passage 4 into the cap-section 1 and above and aroundthe valve 5, when it is desired to lubricate said valve, the cap-nut 20is removed, and the fluid under pressure seeking to escape through port16 lifts the valve 17 from its seat, so that it can be readily removed,and at the same time the ball 18 is likewise lifted upward by thepressure seeking to escape against the seat at the lower end of shaft11, thus closing port 16. A supply of oil or other lubricant is thenadmitted into the passage 16, after which the valve 17 is replaced andthe cap 20 screwed down, so as to hold said valve upon its seat. At thesame time the valve-stem pushes the ball 18 away from its upper seat,which then drops down upon the-valve 5 and permits the oil to flowdownward past the ball and through the groove 19 very slowly into thespace occupied by the pin 7, from which it is gradually distributedbetween the valve 5 and the valve-seat 6. As the valve 5 is rotated backand forth the oil gradually finds its way from the center outward to theouter edges of the valve.

Fig. 2 represents substantially the same organization of parts,excepting that the steel ball 18 is replaced by a valve 21, whichcorresponds practically in function with the ball 18. This may be awinged valve, or it may have a groove 22 on one side. As in Fig. 1, whenthe valve 17 is removed the valve 21 is seated upwardly by thefluid-pressure underneath it closing port 16, and when the valve 17 isreplaced it pushes the valve 21 away from its seat, which then restsupon pin 7.

Fig. 4 represents a modification in which the stem of valve 21 is madelonger and the under side of cap or cover 30 closes the passage 16 andunseats valve 21 when the parts are put together, as illustrated. Thevalvel7 may therefore be dispensed with, since the cap 30 performs thefunction alone of closing port 16. It is apparent that as soon as thecap 30 is removed for admitting lubricant to Patented Aug. 15, 1905. y

passage 16 valve 21 seats upwardly and closes said passage.

I claim- 1. The combination of a valve upon a seat and subject to fluidunder pressure, there being a port or passage for admitting lubricant tothe bearing-surface of said valve, a cover for normally closing saidport and means for automatically preventing the escape of pressure andpermitting the admission of lubricant through said port while said coveris removed.

2. The combination of a valve upon a seat and subject to fluid underpressure, there being a passage for admitting lubricant to thebearing-surface of said valve, a manually-operated cover for normallyclosing said passage and a valve automatically closing to prevent escapeof pressure when said cover is removed for the admission of lubricant.

3. The combination of a valve upon a seat inclosed within a casing andsubject to fluid under pressure. a shaft extending through the casingfor operating the valve. said shaft having a passage for admittinglubricant to the valve. a cover for normally closing said passage at oneend and a valve automatically seating to close the passage at the otherend when the cover is removed.

4. The combination of a valve upon a seat inclosed within a casing andsubject to fluid under pressure, a shaft extending through the casingforoperating the valve, said shaft having a passage for admittinglubricant to the valve and two valves for alternately opening andclosing the passage at either end.

5. The combination of a valve upon a seat inclosed within a casing andsubject to fluid under pressure, means extending through the casing foroperating the valve and having a passage for admitting lubricant to thevalve and means for alternately opening and closing the passage atdifferent points to admit lubricant while preventing escape of pressure.

THOMAS R. BROWN. Witnesses:

SHERWOOD PHILLIPS, W. A. SNYDER.

